Local flux of hydrogen from magnesium alloy corrosion investigated by scanning electrochemical microscopy

Herein, we report the successful electrochemical detection and quantification of H2 fluxes produced from a corroding magnesium alloy using the substrate-generation/tip-collection mode of scanning electrochemical microscopy (SECM). Using a platinum microelectrode, the variation in H2 fluxes was imaged revealing the time-dependent corrosion reaction. Our results demonstrate that through careful control of the corroding media and immersion time, …